Iris nebula (Sendhil Chinnasamy)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: HD200775 · Iris Nebula · LBN 487 · LDN 1174 · NGC 7023

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Iris nebula

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Iris nebula

I have been sitting on this data for a while thinking if I should process and share or just shelve it. There were atleast two sore issues, a dust donut that did not calibrate well and the star shapes on this image.

While I was able to take care of the dust donut by cleaning the optical glass, the star shapes took me several days of testing before I finally gave up. I shared test images with Celestron and Starizona and in the end they both requested the scope be shipped out for repair. I shipped the scope to Starizona and they fixed up the collimation (alignment of primary, secondary and corrector plate) and a few other minor items (loose secondary, grub screws on the corrector plate, main focus knob). The scope is on its way back and I should get it up and running in the coming weeks.

After mulling back and forth, decided to crop out the image and run it through.

Hope you like it. Clear skies.

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Distribution of astrophotographers

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	Distinct awarded users	Total awarded images
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Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
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Extremely wide field
Star trails
Northern lights
Noctilucent clouds
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Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Advanced success
Started	...
Astrometry.net job	6051432
PixInsight job	4I3TA0JHIIB1378PXO6ZX2W5JNS54T3N
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h01m36s.344
RA (top/left)	20h59m56s.876
RA (top/right)	21h03m14s.225
RA (bottom/right)	21h03m17s.266
RA (bottom/left)	20h59m57s.163

Dec (center)	+68°09′49″.85
Dec (top/left)	+68°00′53″.83
Dec (top/right)	+68°00′45″.21
Dec (bottom/right)	+68°18′40″.29
Dec (bottom/left)	+68°18′48″.95

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Iris nebula

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